Drill chuck



FIG. 1 is a front elevational view of a drill chuck showing my new design, elevational views offset by 120° around the chuck body having identical elevational views;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a bottom view thereof drawn to a larger scale; and,

FIG. 4 is a top view thereof to the larger scale.

The broken-line showing of elements of the drill chuck are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a drill chuck, as shown and described. 